This radiator system is composed of a copper tube with an outer diameter of 16 millimeters, a wall thickness of 1 millimeter, and a 10 × 0.2 millimeter copper strip, with a spacing of 3.2 millimeters. It is ventilated by a three bladed axial fan at the back. There are three different speeds for the fan of the same model of warm air blower, which are obtained by using a dual speed electric motor. The wind speed and flow rate also vary depending on the different speeds. The table shows the amount of noise (dB) emitted by the heat exchanger during use, and the smaller the noise, the higher the quietness. The "A" level has the best quietness, followed by the "B" level, and then the "C" level. The "D" level quietness is suitable for factories, warehouses, etc., with a noise level of 80-85.5 decibels.

Horizontal unit radiator model description: This radiator is represented by three sets of numerical letters.

The first group represents the heat dissipation in thousands of calories per hour.

The second group of letters represents the type of air guide vanes

The third group represents single row (one row) and double row (two rows) radiator pipes

For example, the 4L2 type indicates that the radiator has a heat dissipation capacity of 4000 kcal/h, the air guide vanes are "L" shaped, and the heat dissipation pipes are double row (two row)

The basic parameters of the supplementary models of L-shaped horizontal unit radiators are shown in the following table: